AN: This AU was taken from a few posts on my tumblr and adapted for posting here (check out my tumblr here(replace 'dot' and 'slash' with '.' and '/' respectively): silverpracticality dot tumblr dot com slash search slash kuro+space+au). This background chapter was included here because there's lot's of good stuff and important information for understanding the basics of this AU. There isn't much to it yet, but I love this AU too much to just accidentally abandon it like I did my other stories (whoops. I'll get to those eventually, I promise.).
Imagine a kuroshitsuji futuristic space AU where everything is the same except it's in space.
Instead of a manor, Ciel lives in a state-of-the-art spaceship. Sebastian is the captain and navigator; he could probably take care of the ship all by himself but Ciel made him hire other people to take care of things. Bard is the resident weapons expert and cook (he's actually become a fairly decent cook, what with all the cooking videos Sebastian makes him watch). Mey-Rin is the tech wizard and hacks enemy systems as needed. Finny makes repairs and does maintenance around the ship and is being trained by Sebastian to function as the equivalent of an engineer. Snake, a recent addition to the crew, does whatever Sebastian tells him to, but he's mostly being trained to work in the med bay. Tanaka is there mostly for moral support, but he keeps himself busy with menial tasks.
Imagine Ciel wearing shiny, iridescent clothing or clothing with glowing edging and designs on them. Ciel wearing bright blue glittery eye shadow (Sebastian always does his eyeliner because Ciel can never get the lines as straight as Sebastian can). Imagine Ciel getting creative with ways to cover up his contract eye: various glowing contact lenses, decorative partial masks(like the one the Phantom wore in "The Phantom of the Opera"), various adhesive patches of varying degrees of intricacy, embroidered cloth patches, etc. (Sebastian wouldn't let him get facial piercings to string an eye patch onto and Ciel damn near threw a temper tantrum over it. As it was, Ciel gave Sebastian the cold shoulder for over a week and Sebastian never let him forget it.) Imagine Ciel highlighting his hair in creative ways (streaks looked the best most of the time) and colors (white or pastels mostly) because as both a noble and a CEO of a toy and confectionery company, you have to stay edgy somehow.
Imagine Sebastian wearing subtle, smokey eye shadow using either all black or a silvery gray, and using a matte red for special occasions or when entertaining guests. (It's the one vanity he will allow himself; his day-to-day clothing is rather subdued, befitting of a servant.) Imagine the servants wearing sleek but comfortable uniforms, all with the Phantomhive crest on either the lapel or the arm.
Imagine Ciel doing dirty work as the Queen's Watch Dog and trekking with Sebastian through dirty, gritty, rough areas of space stations and space ships with a gun in his hand or tucked beneath his clothes while he goes around asking questions or skulking around corners. Imagine Sebastian still using cutlery in fights, but it's diamond-edged and has a magnet in one end for easier retrieval. Imagine Sebastian disposing of the bodies by sending them through the air lock. Imagine them slipping a few high-value monetary cards into the hand of the security guard so they can get into places they otherwise wouldn't.
In this au, robots and androids are fairly common. Sophisticated androids like the androids in Syfy's Dark Matter or the synths in HUMANS are a relatively recent development and the bugs are still being worked out. As a consequence of Sebastian's inhuman nature, he frequently gets mistaken for an android and gets incredibly offended every single time. Ciel derives endless amusement from these occurrences and brings it up frequently to annoy Sebastian in retaliation for the relentless teasing he receives from Sebastian.
Ciel is very fascinated by Victorian era fashion and customs and it shows in the decoration of his ship's interior. (And why wouldn't he be? He's a member of the British peerage, after all.) When Ciel finally got his hands on the rather massive fortune left behind by his parents at the tender age of ten, the first thing he did was get a better spaceship to live in, seeing as the one he had lived in previously had been reduced to scrap metal by vandals and scavengers. (It had taken a lot of convincing on Ciel's part in order to make the authorities let him live as an independent minor. It was his aunt Francis Midford who had finally sealed the deal; not even the authorities were willing to risk inciting Lady Midford's infamous wrath.) When he had obtained a ship that lived up to his lofty expectations, he gave Sebastian directions as to how he wanted the ship decorated.
And oh, did Sebastian deliver. Ciel will never admit it, but he was highly impressed with how well Sebastian was able to blend the modern interior design aesthetic (one of crisp lines, smooth curves, few sharp corners, white with plain bright colors, and shiny metal) with the Victorian era aesthetic. Sebastian had achieved a near perfect compromise between the two: chandeliers made of smooth, lightly twisting tendrils of glass; wallpaper with a subtle but distinctly Victorian design; glowing designs in the floor meant to mimic carpet runners; plush furniture with embroidered designs; beautiful ceramic vases filled with very realistic looking flowers (these flowers are on a rotation for variety and avoiding dust-coated flowers).
Sebastian had gone the full nine yards on the master suite: the feel was decidedly more Victorian than modern with real wood furniture (very expensive) and a marble and gold themed bathroom (also very expensive). When Ciel declared that the ship was "satisfactory", at first Sebastian was annoyed that he had worked so hard on decorating only to receive a rating of "satisfactory", but he soon realized that "satisfactory" from Ciel Phantomhive was high praise.
The second thing Ciel did after getting his fortune back was set up the means to get a business man's education so he could take back Funtom, the company his father had ran. Due to legal restrictions, Ciel was told the Midfords would handle company matters until he turned 18. After about a year, the Midfords realized that Ciel was perfectly capable of handling the company and told the executive board that they would be listening to Ciel from then on. The members of the executive board weren't too happy, but Francis was able to convince them to listen to her nephew. (Even in a futuristic setting, Francis Midford is quite the formidable woman.) Since Alexis Midford still technically operated Funtom, any money he receives from Funtom as its CEO goes straight into Ciel's bank account. Ciel is, of course, annoyed by this unnecessary middle link and wishes he could simply do away with it, but Sebastian encouraged him to simply drop the matter so that they could move onto more important matters. By the time he was 12, Ciel was able to pull enough strings to bypass any laws and become the CEO, much to his satisfaction.